MAGNETOMECHANICAL BEHAVIOR OF STEEL VIA SQUID MAGNETOMETRY

被引：22

作者：

BANCHET, J ^{[1
]}

JOUGLAR, J ^{[1
]}

VUILLERMOZ, PL ^{[1
]}

WEINSTOCK, H ^{[1
]}

机构：

[1] AFOSR, BOLLING AFB, DC 20332 USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1995年 / 5卷 / 02期

关键词：

D O I：

10.1109/77.403095

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Steel bars mere subjected to stress-strain hysteresis cycles in a horizontal tensile-testing machine while changes in the vertical component of the magnetic field above these bars was recorded by a DC SQUID second-order gradiometer. Magnetic Barkhausen noise was observed after repeated cycling and especially at stress levels for which the magnetic field was at an extremum value. Of greatest practical interest is the fact that the area of the magnetomechanical hysteresis loop (Delta Phi(z) sigma) increased dramatically - by orders of magnitude - over a large number (up to 10(5)) of fatigue cycles. This may have important implications for the in situ nondestructive evaluation of steel.

引用

页码：2486 / 2489

页数：4

共 6 条

[1]

DONALDSON GB, 1993, NATO ADV SCI INST SE, V251, P181

[2] HYSTERESIS AND FATIGUE [J].